linux-kernel - Re: [PATCH 11/16 v2] f2fs: add inode operations for special inodes

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Date:	Tue, 23 Oct 2012 09:01:48 +0200
From:	Marco Stornelli <marco.stornelli@...il.com>
To:	Jaegeuk Kim <jaegeuk.kim@...sung.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	gregkh@...uxfoundation.org, viro@...iv.linux.org.uk, arnd@...db.de,
	tytso@....edu, chur.lee@...sung.com, cm224.lee@...sung.com,
	jooyoung.hwang@...sung.com
Subject: Re: [PATCH 11/16 v2] f2fs: add inode operations for special inodes

2012/10/23 Jaegeuk Kim <jaegeuk.kim@...sung.com>:
> This adds inode operations for directory, symlink, and special inodes.
>
> Signed-off-by: Changman Lee <cm224.lee@...sung.com>
> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@...sung.com>
> ---
>  fs/f2fs/namei.c |  494 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 494 insertions(+)
>  create mode 100644 fs/f2fs/namei.c
>
> diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> new file mode 100644
> index 0000000..899d144
> --- /dev/null
> +++ b/fs/f2fs/namei.c
> @@ -0,0 +1,494 @@
> +/**
> + * fs/f2fs/namei.c
> + *
> + * Copyright (c) 2012 Samsung Electronics Co., Ltd.
> + *             http://www.samsung.com/
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +#include <linux/fs.h>
> +#include <linux/f2fs_fs.h>
> +#include <linux/pagemap.h>
> +#include <linux/sched.h>
> +#include <linux/ctype.h>
> +
> +#include "f2fs.h"
> +#include "xattr.h"
> +#include "acl.h"
> +
> +static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode)
> +{
> +       struct super_block *sb = dir->i_sb;
> +       struct f2fs_sb_info *sbi = F2FS_SB(sb);
> +       nid_t ino;
> +       struct inode *inode;
> +       bool nid_free = false;
> +       int err;
> +
> +       inode = new_inode(sb);
> +       if (!inode)
> +               return ERR_PTR(-ENOMEM);
> +
> +       mutex_lock_op(sbi, NODE_NEW);
> +       if (!alloc_nid(sbi, &ino)) {
> +               mutex_unlock_op(sbi, NODE_NEW);
> +               err = -ENOSPC;
> +               goto fail;
> +       }
> +       mutex_unlock_op(sbi, NODE_NEW);
> +
> +       inode->i_uid = current_fsuid();
> +
> +       if (dir->i_mode & S_ISGID) {
> +               inode->i_gid = dir->i_gid;
> +               if (S_ISDIR(mode))
> +                       mode |= S_ISGID;
> +       } else {
> +               inode->i_gid = current_fsgid();
> +       }
> +
> +       inode->i_ino = ino;
> +       inode->i_mode = mode;
> +       inode->i_blocks = 0;
> +       inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
> +
> +       err = insert_inode_locked(inode);
> +       if (err) {
> +               err = -EINVAL;
> +               nid_free = true;
> +               goto out;
> +       }
> +
> +       mark_inode_dirty(inode);
> +       return inode;
> +
> +out:
> +       clear_nlink(inode);
> +       unlock_new_inode(inode);
> +fail:
> +       iput(inode);

make_bad_inode here?

Marco
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